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/* -------------------------------------------------------------------------- */
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/* -------------------------------------------------------------------------- */
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/* This program is commented throughout in a fashion suitable for processing
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/* This program is commented throughout in a fashion suitable for processing
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with Doxygen. */
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with Doxygen. */
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/* -------------------------------------------------------------------------- */
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/* -------------------------------------------------------------------------- */
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#include "or1ksim-board.h"
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#include "or1k-support.h"
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#include "uart.h"
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#include "uart.h"
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/*! Macro to access a UART register */
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/*! Macro to access a UART register */
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#define UREG8(reg) REG8 (UART_BASE + reg)
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#define UREG8(reg) REG8 (_board_uart_base + reg)
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/*! Macro to check if transmit and transmit holding registers are both empty. */
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/*! Macro to check if transmit and transmit holding registers are both empty. */
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#define BOTH_EMPTY (UART_LSR_TEMT | UART_LSR_THRE)
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#define BOTH_EMPTY (UART_LSR_TEMT | UART_LSR_THRE)
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/*! Macro to wait until a char has been transmitted */
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/*! Macro to wait until a char has been transmitted */
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/* Set 8 bit char, 1 stop bit, no parity */
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/* Set 8 bit char, 1 stop bit, no parity */
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UREG8 (UART_LCR) = UART_LCR_WLEN8 & ~(UART_LCR_STOP | UART_LCR_PARITY);
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UREG8 (UART_LCR) = UART_LCR_WLEN8 & ~(UART_LCR_STOP | UART_LCR_PARITY);
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/* Set baud rate */
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/* Set baud rate */
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divisor = IN_CLK / (16 * UART_BAUD_RATE);
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divisor = _board_clk_freq / (16 * _board_uart_baud);
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UREG8 (UART_LCR) |= UART_LCR_DLAB;
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UREG8 (UART_LCR) |= UART_LCR_DLAB;
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UREG8 (UART_DLL) = divisor & 0x000000ff;
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UREG8 (UART_DLL) = divisor & 0x000000ff;
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UREG8 (UART_DLM) = (divisor >> 8) & 0x000000ff;
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UREG8 (UART_DLM) = (divisor >> 8) & 0x000000ff;
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UREG8 (UART_LCR) &= ~(UART_LCR_DLAB);
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UREG8 (UART_LCR) &= ~(UART_LCR_DLAB);
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